Given that cos theta = 15/17 with theta in quadrant 4, tan ß = 20/21 with ß in quadrant 3.
Find the exact values for the following. Show your work.

They sought new allies to germany tried to get mexico to join and put pressure on the us. the us joined the allies because of the lucitania

Period is the time it takes for one “cycle” to complete. in the parent sine function, period is 2*pi since sin(0) = 0, sin(pi/2) = 1, sin(pi) = 0, sin(3pi/2) = -1, and sin(2pi) = 0. at that point, the sequence repeats itself. i’m not sure if your graph is similar to the sine function since you didn’t provide a picture, but you can find the period by looking at a graph.